DE411998C - Guiding the tool slide on machines for the production of toothed wheels using one or more cutting wheels - Google Patents

Description

The invention relates to machines for the production of gears by means of one or more cutting wheels that are moved back and forth parallel to the axis of the wheel to be toothed, like this for the manufacture of spur gears with arrow teeth in patent specifications 323266 and 382021. With such machines you have the bearing blocks of the Spindles carrying cutting wheels. articulated to the tool slide to to be able to lift the cutting wheels off the work wheel when it goes down. "After the invention the same purpose is achieved in a better and more reliable manner in that the bearing blocks designed as upper slide parts in the direction of the cutting wheel axis are displaceable on inclined surfaces of the tool slide, so that the Cutting wheels when moving the upper parts of the slide be able to lift off or approach the work wheel along the tool slide.

The subject of the invention is shown in the drawing in an exemplary embodiment shown.

Fig. Ι shows a plan view of the machine.

Figure 2 is an enlarged front view of the machine with the workpiece and workpiece mandrel removed.

Fig. 3 shows a side view of Fig. 2.

Fig. 4 to 7 explain the guidance of the tool slide.

The workpiece g (Fig. 1) is set in slow rotation from the stepped pulley of the shaft y. The cutting wheels a, b also experience a rotary movement from the shaft y such that the workpiece and the tools roll on one another. Since the cutting wheels with their carriages ρ (Fig. 1,4 and 5) are connected to the main carriage / machine so that they can be adjusted and locked, they simultaneously take on the mediated by a crank mechanism m (Fig. 1 and 3) in a known manner and forward movement of the main slide I part.

During this back and forth movement, the spindle c of the cutting wheel α and the hollow spindle with play around the spindle c slide (Fig. 6) drive spindle d for the cutting wheel b with guide pieces j, k in the hubs of the worm wheels s that convey their rotation , s ¹ (Fig. 2).

Claims (4)

These guide pieces /, k are designed to produce helical teeth, as shown in the example shown, so that the cutting wheels receive an additional, 'oscillating rotary movement during the strokes in a known manner in addition to the rolling movement. The spindles c, d of the cutting wheels α, b are rotatably mounted in bearings of the upper slide parts e, f ίο, which are guided on the tool slide ρ with inclined surfaces ο (Fig. 6 and 7). These can be set on the main slide / using the setting spindles //, / (Fig. 5 to 7). The dimensions of the guide surfaces are chosen so that the upper slide parts e, f can experience slight displacements in the direction of the cutting wheel axis between the stops puncl p "(Fig. 4 to 7) The main slide I, which is driven by a crank disk m, remains at the dead center of the movement until the stops ρ · and ps that determine the movement have come to rest on their associated end faces of the upper slide parts, and slide during this standstill as each other the tool slide ρ moves on, on its inclined guide surface ο down or up. The sliding down takes place at the beginning of the decline and results in the lifting of one cutting wheel (e.g. α) from the workpiece, while the sliding up takes place at the beginning of the operation The gear friction is sufficient to hold the carriage in place give e, f when moving! If the reversal of movement of the tool slide p is not sufficient, a lock can be used which consists, for example, of pawls q mounted on the shaft r (Figs. 2 and 4), which are located in front of approaches χ (Figs. 5 and 7) at the beginning of the reversal of movement of the tool slide ) of the carriage upper parts. The pawls q are engaged and disengaged by a pivoting movement of the shaft r, which is driven by the thumb disk fe (Fig. 3) and role f is conveyed. The parallel position of the spindles c, d to the main slide I and thus to the tooth of the workpiece g during the lifting and adjusting movement of the cutting wheels a, b is achieved by the worm wheels s, s1 in special slides w2 which are horizontally movable transversely to their axis (Fig. 2 and 3) are stored. This avoids jamming in the drive parts for the rotary movement of the cutting wheels. In the example shown, thumbs ν sitting on shaft v1 take part in the oscillating movement of intermediate shaft t as a result of the linkage connection vT ', vv', v "(Figs. 2 and 3); attack and move it back and forth in jerks. i The movement of the slide tv'z is set in such a way that it is in front of you at the same time and in the same sense and scope as the lever) between the adjustment movement of the cutting wheels. Ρλτεν τ-An Proverbs: 1. Guiding the tool slide on machines for the production of gears by means of one or more cutting wheels which are moved back and forth parallel to the axis of the tooth to be cut, characterized in that the upper slide parts (e, f) can be displaced in the direction of the cutting wheel axis on inclined surfaces (0) the tool slide (p) are guided so that the cutting wheels (a, b ) lift off or approach the workpiece (g) when the upper slide parts are displaced along the tool slide. 2. Guiding the tool slide according to claim 1, characterized in that the displacement of the upper slide parts (e, f) on the tool slide (p) is limited by stops (p ~, p ^s ). 3. Guiding the tool slide according to claim 1, characterized in that during the reversing movement of the tool slide (/>") each slide upper part (e, /) is held by a locking device (q, n) which is inevitably controlled by the main drive of the machine . 4. Guiding the tool slide according to claim r, characterized in that the drive parts (s, c and s ¹ , d) for the orbital movement of the cutting wheels (σ, b) are mounted on the carriage (w ² ) which are involved in the displacement of the Participate slide upper parts (e, f) perpendicular to the cutting wheel axis. For this purpose 2 sheets of drawings.